Russell Westbrook has decided to become a solo marquee attraction with the Oklahoma City Thunder.The All-Star point guard officially signed a three-year, $85.7 million extension with the Thunder on Thursday.The signing comes approximately one month after All-Star forward Kevin Durant bolted the Thunder to join the Golden State Warriors."I am grateful to extend my contract with the Thunder and continue to play with the only organization that I have played for and have loved being a part of since I was drafted into the NBA," Westbrook said in a statement. "I'm really excited about moving forward with this group of guys and continuing to play in front of the best fans in the world."The first year of the extension replaces Westbrook's current deal and raises his salary from $17.8 million to $26.5 million. There is also a player option for the third year, meaning Westbrook could potentially become a free agent following the 2017-18 campaign."On behalf of the Thunder organization and the entire state of Oklahoma, I want to congratulate Russ and offer my sincere appreciation for not only his profound presence and skill as a player, but for his high character, personal integrity and extraordinary leadership," Thunder chairman Clay Bennett said in the statement. "We are thrilled he will continue with us and we look forward to exciting days ahead for the Oklahoma City Thunder."Locking up the five-time All-Star was crucial for the Thunder after the loss of Durant. Westbrook recorded 18 triple-doubles last season while averaging 23.5 points, 10.4 assists, 7.8 rebounds and 2.0 steals while finishing fourth in the MVP balloting."Russell has been an outstanding leader of this team since he was drafted by our organization eight years ago. His competitiveness, character and unique athletic ability have propelled him to the forefront of the game," Thunder general manager Sam Presti said in the statement. "Russell personifies many of the traits that are synonymous with Oklahoma and Oklahomans. We are excited that Russell has chosen to continue to build the legacy of the Thunder with us as we move forward together."Westbrook has played all eight seasons of his NBA career with Oklahoma City, averaging 21.5 points, 7.6 assists, 5.6 rebounds and 1.7 steals in 587 games while teaming up with Durant.Westbrook was drafted fourth overall in 2008 by the Seattle SuperSonics, who moved to Oklahoma City that year to become the Thunder. Durant was drafted second overall by Seattle in 2007.